.calculator{
    .start_dialog{
        width: 970px;
        background-color: #ffffff;
        font-size: 0;
        .select_handly{
            background-color: #000000;
            width: 460px;
            height: 200px;
            display: inline-block;
        }
        .select_system{
            background-color: #000000;
            width: 460px;
            height: 200px;
            display: inline-block;
        }
    }
}